Animation Node 2.0 Object Instancer question
Animation Nodes is a powerful system, but it is bare bones in certain aspects. The best way to make something like your scene is by using procedural methods.

Lets say you have m number of polygons, you want n number of spheres to be sticking out of each face, then you should instance a sphere m*n number of times. To position the spheres we will need the polygons centers and normals. We will repeat the list of the centers and normals n number of times to match the number of spheres. All we have to do is to set the location of the sphere to the the center plus the normal multiplied by some factor, the problem is that there will be n number of sphere at each face. So to solve this, the factor will be constant for each layer of spheres but increases by each layer. From that reasoning, we can implement this like this (Let me know if you need a more detailed explanation):



This will result in: